Method of locating printing image on copy sheets



July 11, 1967 Filed Sept. 23, 1965 R. W. HOBBS ET AL METHOD OF LOGATINGPRINTING IMAGE ON COPY SHEETS 6 Sheets-Sheet 1 .f 2 g? 4 25 ,32 KunEmDmCmBvAOAuBulOuDmEmm SET FAST I c c c o o o a c a a a 27 3/ 32 E33SET FAST 4/ [Q N f SET FAST 7/ O O 0 c 0 O O a O Q Q? Z g w SET M54 25 m55 IIIIEJIPTI-CWBIAOAIIIBHIQHDII Eml 2 7 i I I 58 LT 28 26 INVENTORS 37E 35 nniEmDmClllB A OABIC D E" R/C'HARD W. HOBBS WILL/AM f. MATTHEWSJOSEPH A. SZYMAMSK/ ara Q July 11, 1967 R. w. HOBBS ET AL METHOD OFLOCATING PRINTING IMAGE ON COPY SH EETS 6 Sheets-Sheet 2 Filed Sept. 23,1965 WILL/AM E. MATTHEWS .10551 AQSZYMAIVSKI 7HE/f H H July 11, 1967 R wHOBBS ET AL METHOD OF LOCATING PRINTING IMAGE ON COPY SHEETS Filed Sept.23, 1965 6 Sheets-Sheet 5 S] m S M swfl P 04 QQ RMH A/P HLE mum RWJ v, s

Th Eli/"H H y 11, 1967 R. w. HOBBS ET AL 3,330,210

METHOD OF LOCATING PRINTING IMAGE ON COPY SHEETS Filed Sept. 25, 1965 6Sheets-Sheet 4 l/Vl/E/VTOHS RICHARD. H0888 WILLIAM E. MATTHEWS JOSEPH A.SZYMA/VS/f/ fiwd r y 11, 1967 R. w. HOBBS E L 33 52 0 METHOD OF LOCATINGPRINTING IMAGE 0N COPY SHEETS 6 Sheets-Sheet 5 Filed Sept. 23, 1965 July11, 1967 w. HOBBS ET AL METHOD OF LOGATING PRINTING IMAGE ON COPY SHEETS6 Sheets-Sheet 6 Filed Sept. 25, 1965 R/CHARD PM W/LL/AM E MATTHEWSJOSEPH A. SZYMA/VSK/ er QM C2, @1

United States Patent 3,330,210 METHOD OF LOCATING PRINTING IMAGE 0N COPYSHEETS Richard W. Hobbs, 26 Stacy Court 60025, and William E. Matthews,1512 Juneway Terrace 60626, both of Glenview, Ill., and Joseph A.Szymanski, 2145 W.

Chase, Chicago, Ill. 60645 Filed Sept. 23, 1965, Ser. No. 489,712 3Claims. (Cl. 101-426) This invention relates to planographic printingapparatus and to a method for planographic printing.

More particularly, this invention relates to offset planographicprinting apparatus in which a master planographic printing plate ismounted upon a plate cylinder, in operative relation to a so-calledinking cylinder and an ink transfer cylinder, and sheets of copy paperare continuously fed under the plate cylinder for printing an image fromthe master planographic printing plate onto the copy sheets. Such offsetplanographic printing presses are well known in the art and are made byvarious manufacturers thereof.

One of the problems experienced in offset planographic printing is themake-up or make-ready time which is required for the operator to preparethe press for printing in relation to the image or images on the masterplanographic printing plate and to assure proper registry between theimage or images on the master planographic printing plate and thevarious mechanical devices or instrumentalities which are commonlyemployed in such oflset planographic printing presses and which arearranged at spaced intervals therein relative to the path or travel ofcopy sheets fed through the press including the paper sheet feedmechanism; the paper sheet jogger; the plate cylinder; the ink fountainunit, and other devices or instrumentalities, and this problem becomesparticularly acute when changes are made from copy sheets of one size tocopy sheets of another size.

An object of the present invention is, therefore, to provide a novelmeans and method for minimizing the make-up or make-ready time requiredto arrange an offset planographic printing press for printing.

Another object of the present invention is to provide a new and improvedmeans and method for assuring proper registry and centering between themaster planographic printing plate and the image or images thereon andthe copy sheets fed through the press so as to obtain the desired properregistry and centering between the image or images on the masterplanographic printing plate and the copy sheets onto which the image isprinted.

An additional object of the present invention is to provide in an ofisetplanographic printing press a novel combination of a master scale unitfor determining the position of an image on an offset planographicprinting plate and a group of auxiliary scale units each embodying scalelegends or indicia corresponding to those on the master scale unit andwhich auxiliary scale units are adapted to be positioned in relation tovarious devices or instrumentalities in the press which affect themovement or positioning of the copy sheets, or the operation of thelinking mechanism to the end that the image on the master planographicprinting plate will be properly centered and printed on the copy sheetsin the same relative position which it has on the master planographicprinting plate.

An additional object of the invention is to provide novel scale meansfor use in an offset planographic printing press for properly centeringa stack of paper copy sheets in relation to the image or images on themaster planographic printing plate to secure the desired uniform icecentering of the image or images as printed on the copy sheets.

A further object of the present invention is to provide novel scalemeans and a novel method of properly positioning the various devices andinstrumentalities of an offset planographic printing press which act inone way or another upon the copy sheets fed through the press so as tosecure proper registry between all of such parts or devices in relationto the copy sheets to the end that the image on the master planographicprinting plate will be printed on the copy sheets in the same relativeposition it occupies on the master planographic printing plate.

Other objects will appear hereinafter.

In the drawings:

FIG. 1 is an exploded plan View of a master oflfset planographicprinting plate having an image thereon and showing a copy sheet ontowhich the image is to be printed, and showing a novel T-scale member ofthe present invention positioned upon the master offset planographicprinting plate at the first step in the operation of ofiset planographicprinting in accordance with the practice of the present invention;

FIG. 2 is a plan view illustrating the second step in the operation ofoffset planographic printing in accordance with the practice of thepresent invention, and in which a copy sheet is laid upon the masterplanographic printing plate and the novel T-scale member is laid overthe copy sheet and over the T-scale member;

FIG. 3 is an exploded diagrammatic view showing one embodiment of thenew auxiliary scale means of the present invention position in relationto the sheet feed mechanism at the feed-in end of an offset planographicprinting press, according to the practice of the present invention;

FIG. 4 is a fragmentary exploded diagrammatic view showing oneembodiment of the new scale means of the present invention positioned inrelation to a sheet jogger mechanism of an oflset planographic printingpress, in the practice of the present invention;

FIG. 5 is an exploded diagrammatic view illustrating another embodimentof the novel scale means of the present invention associated with theink fountain mechanism of an offset planographic printing press andillustrating the master planographic printing plate having an imagethereon centered in reference to the ink fountain mechanism and oneembodiment of the novel auxiliary scale means of the present invention;v

FIG. 6 is an exploded diagrammatic view illustrating the sheet-receivingand sheet-stacking unit of an offset planographic printing press havinganother embodiment of the new auxiliary scale means of the presentinvention associated therewith;

FIG. 7 is a plan view of a typical embodiment of the master T-scale unitof the present invention;

FIG. 8 is a plan view of a typical embodiment of one form of the newauxiliary scale means of the present invention and which, in use, isattached to and mounted upon a part or instrumentality of theplanographic printing press at the sheet feed-in end thereof;

FIG. 9 is a transverse sectional detail view on line 99 in FIG. 8;

FIG. 10 is a plan view of another embodiment of the auxiliary scalemeans of the present invention and which is particularly adapted for usewith the sheet jogger mechanism of an offset planographic printingpress;

FIG. 11 is a transverse sectional detail view on line 11-11 in FIG. 10;

FIG. 12 is a sectional detail View on line 1212 in FIG. 10;

FIG. 13 is a plan view of another embodiment of one form of theauxiliary scale means of the present in;

- divisions, as in FIGS.

, dicated by numerals 30,

mechanism of an offset planographic printing press;

FIG. 15 is a plan view of another embodiment of the novel auxiliaryscale means of the present invention and which is particularly adaptedfor use in conjunction with the take-out end and sheet-stacking unit ofthe sheetfee ding mechanism of an ofiset planographic printing press;

' FIG. 16 is a transverse sectional detailview on line 16- 16 in FIG. 15and illustrating the adhesive-coated backing and mounting strip of theauxiliary scale unit ilustrated in FIG. 15; j

FIG. 17 is a plan view of a modification of the novel scale means of thepresent invention as arranged in inches and in fractions of an inch,rather than in arbitrary scale 1 to 8, 10, 13,15, and 18 to 22, andwhich may be employed in place of the master T-scale unit or'as part ofeach of the auxiliary scale units of the present invention;

FIG. 18 is a fragmentory perspective view of the rear or feed-in endportion of a typical offset planographic printing press showing atypical embodiment of one of the auxiliary scale units of the presentinvention and as illustrated in FIGS. 3, 8 and 9 in operativerelationship there- FIG. 19 is a fragmentary perspective viewillustrating parts of the sheet jogger mechanism of a typical offsetplanographic'printing press and showing another embodiment of theauxiliary scale means of the present invention, as illustrated in FIGS.4, and 11, associated with and mounted in operative relationship to thesheet jog ger mechanism of the press;

FIG. 20 is a fragmentary perspective view of parts of the ink fountainmechanism of a typical offset planographic printing press and showingone embodiment of the new auxiliary scale means of the presentinvention, as illustrated in FIGS. 4, l3 and 14, mounted in operativerelationship to the ink fountain mechanism and the socalled inkrflowbutton control valve members embodied therein;

' FIG. 21 is a fragmentary perspective view of the front 'or papertake-out end portion and sheet-stacking mechanism of a typical offsetplanographic printing press and showing one embodiment of the newauxiliary scale means of the present invention, as illustrated in FIGS.6, and 16, associated therewith;

FIG. 22 is a sectional detail view on line 22-22 in FIG. 21;

FIG. 23 is a fragmentary perspective view illustrating another form ofthe take-out or front end portion of an oifset planographic printingpress having the embodiment of the'novel auxiliary scale means of thepresent invention, as shown in FIGS. 6, 15 and 16, associated therewith;and

FIG. 24 is a transverse sectional view on line 23-23 in FIG.2-2.

The present. invention embodies a novel scale means which includes amaster T-scale member 25, as shown in FIGS. 1, 2 and 7 of the drawings,and which includes a main arm or body portion 26 and a cross arm orT-head 27 on which one embodiment of the master scale 28 of the presentinvention is provided. The master scale 28 is shown as being in the formof arbitrary primary scale units or divisions 29, which are indicated byletters of the alphabet, and subdivisions thereof which are inwhich arespaced 'to the right and left of the center of the scale 28. Thus, forexample, the primary scale divisions 29 may be one-inch in length andthe subdivisions thereof fractions of an inch.'

The master scale member 25 is intended for use with an offset masterplanographic printing plate 31 which may be ofany type and of anymaterial used in offset planographic printing and which may have animage reproduced thereon by any known image-forming method. Thus, forthe purpose of illustration, the master planographic printing plate 31is shown as having thereon an image 32 in the form of printed letters,or the like, and a picture image 33, which are merely illustrative ofthe types of images which may be carried by the master plano graphicprinting plate 31.

As is well known in the art, the master planographic printing plate 31maybe of any suitable type and construction and is flexible to enable itto be mounted on the plate cylinder of an offset planographic printingpress. g I a Paper copy sheets, on which the images 32-33 onthe masterplanographic printing plate 31 are to be printed, are indicated at 34 inthe drawings and each of such paper copy sheets has parallel sidemarginal edges 70.

In the practice of the present invention the master T-scale unit 25 isused properly to locate and center the relative positions of the images32 and 33 on the master planographic printing plate 31 on and inreference to the marginal side edges 70' of the copy sheets 34, andthereafter, with the aid of the auxiliary scale units, properly tocenter certain of the various devices and instrumentalities embodied inan offset planographic printing press which operate upon the copy sheets34, or upon the inking mechanism of the press, including the sheet-feedmech-- anisrn; the sheet jogger mechanism; the ink fountain mechanism;and the paper-stacking mechanism; to the end that the images 32 and 33on the master planographic printing plate 34 will be printed upon thecopy sheets 34 in the same relative positions and in the same relativeintensities or shades of dark and light as they appear on the masterplanographic printing plate 31.

Thus, in the practice of the present invention, and in the first step inthe new method of offset planographic printing in accordance therewith,the operator lays the master T-scale unit 25 on the image-bearing faceof the master planographic printing plate 31, with the T-head or crossarm 27 against one longitudinal edge 71 thereof, to locate the positionsof the'images 32-33 thereon,

in terms of the scale 28, and in reference to the marginal or side edges71 of the master planographic printing plate 31. A specimen copy sheet34 to be used is thenlaid over the printing face of themasterplanographic printing plate 31, and the copy sheet 34 shifted toleft or right as may be necessary, in order roughly to center the images32 .33 in reference to the marginal side edges of the. copy sheet 34.The master T-scale unit 25 is then slid along the printing face of the'master planographic printing plate 31 and over the roughly centeredcopy sheet 34 into the position in which the parts are shown in FIG.'2,whereupon a reading is taken on the master T-scale unit 25 relative tothe position of the sidemarginal edges 70 of the copy sheet 34, for usein setting the various devices and instrumentalities in the press inrelation to the master scale member 25-28 and in reference to the am!-iliary scale units, as will be described presently- Thus, it will beassumed in the following example that the marginal side edges 70 of theproperly centered copy sheet 34, as disposed on the printing face of themaster planographic printing plate 31, and as centered relative to thepositions of the images 32-33 on the master planographic printing plate31, lie between points E-3-E3 on the scale 28 of the master T-scale unit25 (see FIG. 7).

The various devices and instrumentalities in the offset planographicprinting press can then be adjusted for the purpose of properlypositioning them toassure that the word-image 32 and the picture-image33 on the mass ter planographic printing plate 31 will be printed inproper registery on the copy sheets 34 and in the same relativepositions as the images 32 and 33 occupy on the printing face of themaster planographic printing plate 31.

To this end, the present invention provides a number of auxiliary scaleunits, which are comparable to and subordinate to the master scale unit25, and for use in conjunction with the various devices andinstrumentalities of an offset planographic printing press to assurethat such various parts and devices may be properly positioned oradjusted to feed the copy sheets 34 therethrough in such positionrelative to the master planographic printing plate 31 that the images 32and 33 thereon will be printed in proper registry and in the samerelative positions on the copy sheets 34 as they are on the masterplanographic printing plate 31.

Such offset planographic printing presses are manufactured and sold byvarious manufacturers and typical embodiments thereof are illustratedand described in the so-called Reference Manual of theAddressograph-Multigraph Corporation of Cleveland, Ohio, for itsMultigraph- Multilith Class 1250 Offset Duplicator (copyright 1957).

Thus, for example, the present invention provides an auxiliary scaleunit 35 for use in conjunction with the feed-in end portion orsheet-feed mechanism 39 (FIG. 3) of an offset planographic printingpress. This auxiliary scale unit 35 is shown in detail in FIGS. 8 and 9of the drawings, and comprises an elongated .body or scalebearing member36 having printed or otherwise inscribed thereon a scale unit 37corresponding to the master scale unit 26 on the master T-scale unit 25.This auxiliary scale unit 35-3637 is adapted to be attached by anysuitable attaching means, such as a series of spaced U-shaped attachingclips 38, which are attached to the scale-bearing body 36 thereof, toany suitable part of the sheet-feed mechanism 39 of an offsetplanographic printing press, and, as shown in FIGS. 3 and 18 of thedrawings. Thus, for the purpose of illustration, the auxiliary scaleunit 35 is attached, by the clips 39, to the so-called U-shaped bail bar40 of the sheet-feed mechanism 39 of an ofiset planographic printingpress, by means of the spaced U- shaped attaching clips 38.

When the auxiliary scale unit 35 is thus attached to the U-shaped bailbar 40 of the sheet-feed mechanism 39, the sheet-feed mechanism 39 maybe adjusted laterally (FIG. 18) so that the marginal edges of each of astack of copy sheets 34 at the feed-in end of the press will occupy thesame relative position in reference to the auxiliary scale unit 35, andhence to the sheet-feed mechanism 39, as the specimen copy sheet 34 hasin relation to the master T-scale unit 25, as shown in FIG. 2, that is,the marginal edges 70 of the copy sheets 34 in the stack of copy sheets34 (FIG. 18) will lie between points E-3 and E-3 on the auixiliary scaleunit 35-36-37.

Hence, when the copy sheets 34 in the stack thereof (FIG. 18) are sodisposed all of the copy sheets 34 will be fed into the press inposition to have the images 3233 on the master planographic printingplate 31 printed on the copy sheets 34 in properly registered andcentered position.

The present invention also provides an additional auxiliary scale unit41 (FIGS. 4, 10, 11, 12 and 19) which is especially adapted for use inconjunction with the sheetjogger mechanism 42 of an offset planographicprinting press, which is generally illustrated in FIG. 19 of thedrawings.

The present invention also provides an auxiliary jogger scale unit 41which includes an elongated body or scale bearing member 43 havingthereon a scale member 44, which may be secured to the body orscale-bearing member 43 in any suitable manner, as by means of anadhesive coated strip 45, which is attached to the rear surface of thebody or scale-bearing member 43 (FIG. 11). The auxiliary jogger scale 44corresponds to the scale 28 on the master T-scale member 25. Theelongated body member 43 of the auxiliary jogger scale unit 41 has anelongated clamping clip 46 formed integrally therein, on its rearsurface (FIGS. 10 and 11) and by means of which the auxiliary joggerscale unit 41 may be detachably attached to a horizontally extendingframe member 47 of the jogger mechanism 42, as shown in FIGS. 11 and 19of the drawings.

When the auxiliary jogger scale 41 is thus positioned the sheet joggermechanism 42 may be adjusted laterally so that the copy sheets 34 to bejogged will be properly centered thereby relative to the other devicesand instrumentalities of the offset planographic printing press andrelative to the images 32-33 on the master planographic printing plate31 to assure that the copy sheets 34 will be fed from the joggermechanism 42 into and through the printing press in such position as toprint the images 32-33 carried by the master planographic printing plate31 in properly centered and registered position on the copy sheets 34.

The present invention also provides an additional auxiliary scale unit48, which is especially designed and adapted for use with the inkfountain mechanism 53 of an offset planographic printing press, asgenerally shown in FIGS. 5 13, 14 and 20 of the drawings. This auxiliaryscale unit 48 includes an elongated body or scale-bearing member 49having thereon a scale 50 which corresponds to the scale 28 on themaster T-scale unit 25. The body or scalebearing member 49 of theauxiliary ink fountain scale unit 48 has a series of notches 51 formedin the lower edge portion thereof (FIG. 13), and these notches 51 areadapted for the reception of the screw-threaded shanks 51 of ink flowbutton control valve members 52, which are Well understood in the art(FIGS. 14 and 20).

Thus, in the practice of the present invention, the auxiliary inkfountain scale unit 48 may be detachably mounted upon the ink fountainmechanism 53 of an offset planographic printing press by inserting thenotched portions 51 in the lower marginal edge portion of the body orscale-bearing member 49 of the auxiliary scale unit 48 over the threadedshanks 73 of the ink flow button control valve members 52 and betweenthe latter and the adjacent wall 54 of the ink fountain mechanism 53, asbest shown in FIG. 14 of the drawings.

When so disposed, certain of the ink flow control button valve members52 may be manipulated so as to control the flow of ink from the inkfountain mechanism 53 onto the inking cylinder, and thence by way of thetransfer cylinder onto the master planographic printing plate 31 on theplate cylinder (not shown) so as to apply ink, as needed, and in suchquantities as may be desirable or necessary for reproducing the wordimage 32 and the picture, image 33 on the master planographic printingplate on the copy sheets 34 in the proper tones of dark and light, itbeing understood that the reproduction of the picture image 33frequently requires a greater supply of ink than does the reproductionof the word image 32 so that the images will be printed in the propershades of dark and light areas.

Thus, in the example given above, if it is assumed that the pictureimage 33 on the master planographic printing plate 31 lies betweenpoints D and B, left of the center 0, on the scale 28 of the masterT-scale unit 25, when the auxiliary ink fountain scale unit 48 isproperly positioned on the supporting member 54 of the ink fountainmechanism 53, those of the ink flow button control valve members 52which are disposed between the corresponding points D and B, left ofcenter 0, in the auxiliary ink fountain scale 48 may be opened to agreater extent than the other ink fiow button control valve members 52so as to supply relatively more ink from the ink fountain 53 to the inkroller, ink transfer roller, and thence to the area of the masterplanographic printing plate 31 in which the picture image 33 is disposedthan is provided to other image-bearing areas of the master planographicprinting plate 31, so as to assure that the picture or relatively darkimage 33 on the master planographic printing plate 31 will be printed ina depth or dark area the depth or dark area of the picture masterplanographic printing plate 31, image '32 will be printed in arelatively shade.

' Thus, suitable adjustments of the ink flow button control valvemembers 52 may also be made, as desired, to obtain the proper depth onthe copy sheets 34 as to the printed image 32 on the master planographicprinting plate 31.

The present invention also provides an additional'auxiliarysheet-stacking scale unit 55, shown in FIGS. 6, 15, 16 and 21 of thedrawings, and which is particularly adapted for use in conjunction withthe sheet-stacking unit 56 at the feed-out end of an offset planographicprinting press, as shown in FIGS. 21 and 22 of the drawings. Thisauxiliary sheet-stacking scale unit 55 includes a body or scale-bearingmember 57 having an auxiliary scale 53 thereon which corresponds to thescale 28 on the master T-scale unit 25. The auxiliary sheet-stackingscale unit 55 has on the back thereof an adhesive strip 72 (FIG. 22)

corresponding to whereas the word lighter depth or by means of which itis attached to any suitable stationary part 59 of the supporting frameof an offset planographic printing press so that the sheet-stackingmechanism 56 may be adjusted laterally to receive the printed copysheets 34 in proper registry with the other parts or instrumentalitiesof the planographic printing press including the sheet-feed mechanism39, the sheet jogger mechanism 41, the ink fountain mechanism 48, andother parts of the press.

A modification of the sheet stacking mechanism 56 is shown in FIGS. 23and 24 of the drawings and those parts thereof which are comparable toor correspond to similar parts in the form of the invention illustratedin FIGS. 21 and 22 have been given the same reference numerals followedby the additional and distinguishing reference character a.

The form of the invention illustrated in FIGS. 23 and 24 of the drawingsis substantially similar to that shown in FIGS. 21 and 22 of thedrawings, except that in the form of the sheet stacking mechanism 56ashown in FIGS. 23 and 24 of the drawings, the sheet stacking mechanism56a has a different form of guide means for receiving the printed copysheets 34a and stacking them at the feed-out or front end of the ofisetplanographic printing press, as is well understood in the art.

Thus, in the form of the invention illustrated in FIGS. 23 and 24 of thedrawings the sheet stacking mechanism 56a has upright side guide walls60 and an upright sheet stop arm 61 at the front thereof rather than theoverhead sheet stack guide mechanism 56 and downwardly extending guidearms 63 and 64 therefor, as in the form of the invention illustrated inFIGS. 21 and 22.

A modification of both the master scale means and the auxiliary scalemeans of the present invention is illustrated in FIG. 17 of thedrawings, wherein it is generally indicated at 65 and includes anelongated body 66 having thereon a scale 67 which includes primary scaledivisions 68 and fractional scale divisions 69 which are comparable tothe primary scale divisions and sub-scale divisions 29 and30,'respectively, on the master T-scale unit 25, and on the auxiliaryscale units heretofore described,

except that in this modification of the invention the scale divisionsare'in terms of inches and fractional parts thereof, rather than interms of arbitrary major scale divisions, indicated by letters, andarbitrary sub-divisions of such major scale divisions, as in the form ofthe invention illustrated in FIGS. 1 to 16 and 18 to 24, both inclusive.

Thus, the inch scale unit 65-67 may be adapted and used on both themaster T -scale unit and all of the auxiliary scale units, in place ofthe master scale unit 28 and the auxiliary scale units heretoforedescribed, and with the same results.

It will thus be seen from the foregoing description, considered inconjunction with the accompanying drawimage 33 on the 8 ings, that thepresent invention provides a novel planographic printing apparatus andmethod for use in offset planographic printing and thus has thedesirable advantages and characteristics and accomplishes its intendedobjects including those hereinbefore pointed out and others which areinherent in the invention.

We claim:

1. A method of planographic printing utilizing scale devices forlocating the p'ositionof an image on the printing face of a printingplate with respect to the side marginal edges of the printing plate andin relation to the side marginal edges of copy sheets on which the imageis to be printed at a predetermined location thereon, comprising thesteps of: V a

(1) providing a separate master scale unit with scale indicia thereon;

(2) positioning the master scale unit over the printing face of theprinting plate to determine the location of the image thereon withrespect to the side marginal edges of the printing plate and in relationto the said scale indicia;

(3) positioning a copy sheet on the printing plate to overlie the saidimage thereon and roughly centering the copy sheet with respect to theimage on the printing face of the printing plate and in relation to theside marginal edge of the copy sheet;

(4) positioning the master scale unit over the said copy sheet and overthe printing face of the printing plate of the printing plate;

(5) moving the said master scale unit over the copy 7 sheet and over theprinting face of the printing plate and reading the scale indicia on themaster scale unit to determine the position in which the image is to beprinted on the said copy sheet in relation to the side marginal edges ofthe copy sheet;

(6) positioning an auxiliary scale means with scale indicia thereonidentical with the scale indicia on the said master scale unit adjacentto and in cooperation with the sheet guide mechanism at the feedin endof the planographic printing press;

(7) placing the printing plate in the printing press;

(8) placing the copy sheets in the said sheet feed mechanism of theprinting press;

(9) adjusting the said sheet feeding mechanism in accordance with thesaid indicia on the said auxiliary 7 scale means; and (10) effectingmovement of the said copy sheets through the press to effect printing ofthe image on' the copy sheets in the same relative location with respectto the side marginal edges of the copy sheets as' the location of theimage on the printing face of the said printing plate bears in' relationto the side mar- (1) providing a separate master T-scale unit with scaleindicia thereon;

(2) positioning the said master T-scale unit over the printing face ofthe printing plate to determine the location of the image thereon withrespect to the side marginal edges of the printing plate and in rela-'tion to the said scale indicia thereon; (3) positioning a copy sheet onthe printing face of the printing plate to overlie the said imagethereon and roughly centering the copy sheet with respect to the imageon the printing face of the printing plate and in relation to the sidemarginal edge of the copy sheet;

(4) positioning the said master T-scale unit over the said copy sheetand over the printing face of the printing plate with the copy sheetresting on the printing face of the printing plate;

(5) moving the said master T-scale unit over the said copy sheet andover the printing face of the printing plate and reading the scaleindicia on the said master T-scale unit to determine the position inwhich the image is to be printed on the said copy sheet in relation tothe side marginal edges of the copy sheet;

(6) positioning an auxiliary scale means with scale indicia thereonidentical with the scale indicia on the said master T-scale unitadjacent to and in cooperation with the sheet guide mechanism at thefeed-in end of the planographic printing press;

(7) placing the printing plate in the printing press;

(8) placing the copy sheets thereon in the said sheet feed mechanism ofthe printing press;

(9) adjusting the said sheet feeding mechanism in accordance with thesaid indicia on the said auxiliary scale means; and

(10) effecting movement of the said copy sheets through the printingpress to effect printing the image on the copy sheets in the samerelative location with respect to the side marginal edges of the copysheets as the location of the image on the printing face of the saidprinting plate bears in relation to the side marginal edges of theprinting plate.

3. A method of planographic printing utilizing scale devices forlocating the position of an image on the printing face of a printingplate with respect to the side marginal edges of the printing plate andin relation to the side marginal edges of copy sheets on which the imageis to be printed at a predetermined location thereon, com prising thesteps of:

(1) providing a separate master scale unit with scale indicia thereon;

(2) positioning the master scale unit over the printing face of theprinting plate to determine the location of the image thereon withrespect to the side marginal edges of the printing plate and in relationto the said scale indicia;

(3) positioning a copy sheet on the printing face of the printing plateto overlie the said image thereon and roughly centering the copy sheetwith respect to the image on the printing face of the printing plate andin relation to the side marginal edge of the copy sheet;

(4) positioning the master scale unit over the said copy sheet and overthe printing face of the printing plate with the copy sheet resting onthe printing plate;

(5) moving the said master scale unit over the copy sheet and over theprinting face of the printing plate and reading the scale indicia on themaster scale unit to determine the position in which the image is to beprinted on the copy sheet in relation to the side marginal edges of thecopy sheet;

(6) positioning an auxiliary scale means with scale indicia thereonidentical with the scale indicia on the said master scale unit adjacentto and in cooperation with the sheet guide mechanism at the feed-in endof the planographic printing press;

(7) positioning additional auxiliary scale means with scale indiciathereon identical to those on the said master scale unit in cooperativerelationship with sheet jogger means and in cooperation with the inkfountain mechanism of the said printing press;

(8) placing the printing plate in the printing press;

(9) placing the said copy sheets in the said sheet guide mechanism ofthe printing press;

( 10) adjusting the said sheet guide mechanism, said sheet jogger meansand ink fountain mechanism in accordance with the said indicia on thesaid auxiliary scale means; and

(11) effecting movement of the said copy sheets through the press toeffect printing the image on the copy sheets in the same relativelocation with respect to the side marginal edges of the copy sheets asthe location of the image on the printing face of the said printingplate bears in relation to the side marginal edges of the printingplate.

References Cited UNITED STATES PATENTS 1,202,531 10/1916 Kaddeland101-365 2,226,302 12/1940 Aswad 33184.5 2,516,613 7/1950 Bray.

5 DAVID KLEIN, Primary Examiner.

1. A METHOD OF PLANOGRAPHIC PRINTING UTILIZING SCALE DEVICES FORLOCATING THE POSITION OF AN IMAGE ON THE PRINTING FACE OF A PRINTINGPLATE WITH RESPECT TO THE SIDE MARGINAL EDGES OF THE PRINTING PLATE ANDIN RELATION TO THE SIDE MARGINAL EDGES OF COPY SHEETS ON WHICH THE IMAGEIS TO BE PRINTED AT A PREDETERMINED LOCATION THEREON, COMPRISING THESTEPS OF: (1) PROVIDING A SEPARATE MASTER SCALE UNIT WITH SCALE INDICIATHEREON; (2) POSITIONING THE MASTER SCALE UNIT OVER THE PRINTING FACE OFTHE PRINTING PLATE TO DETERMINE THE LOCATION OF THE IMAGE THEREON WITHRESPECT TO THE SIDE MARGINAL EDGES OF THE PRINTING PLATE AND IN RELATIONTO THE SAID SCALE INDICIA; (3) POSITIONING A COPY SHEET ON THE PRINTINGPLATE TO OVERLIE THE SAID IMAGE THEREON AND ROUGHLY CENTERING THE COPYSHEET WITH RESPECT TO THE IMAGE ON THE PRINTING FACE OF THE PRINTINGPLATE AND IN RELATION TO THE SIDE MARGINAL EDGE OF THE COPY SHEET; (4)POSITIONING THE MASTER SCALE UNIT OVER THE SAID COPY SHEET AND OVER THEPRINTING FACE OF THE PRINTING PLATE WITH THE SAID COPY SHEET RESTING ONTHE PRINTING FACE OF THE PRINTING PLATE; (5) MOVING THE SAID MASTERSCALE UNIT OVER THE COPY SHEET AND OVER THE PRINTING FACE OF THEPRINTING PLATE AND READING THE SCALE INDICIA ON THE MASTER SCALE UNIT TODETERMINE THE POSITION IN WHICH THE IMAGE IS TO BE PRINTED ON THE SAIDCOPY SHEET IN RELATION TO THE SIDE MARGINAL EDGES OF THE COPY SHEET; (6)POSITIONING AN AUXILIARY SCALE MEANS WITH SCALE INDICIA THEREONIDENTICAL WITH THE SCALE INDICIA ON THE SAID MASTER SCALE UNIT ADJACENTTO AND IN COOPERATION WITH THE SHEET GUIDE MECHANISM AT THE FEEDIN ENDOF THE PLANOGRAPHIC PRINTING PRESS; (7) PLACING THE PRINTING PLATE INTHE PRINTING PRESS; (8) PLACING THE COPY SHEETS IN THE SAID SHEET FEEDMECHANISM OF THE PRINTING PRESS; (9) ADJUSTING THE SAID SHEET FEEDINGMECHANISM IN ACCORDANCE WITH THE SAID INDICIA ON THE SAID AUXILIARYSCALE MEANS; AND (10) EFFECTING MOVEMENT OF THE SAID COPY SHEETS THROUGHTHE PRESS TO EFFECT PRINTING OF THE IMAGE ON THE COPY SHEETS IN THE SAMERELATIVE LOCATION WITH RESPECT TO THE SIDE MARGINAL EDGES OF THE COPYSHEETS AS THE LOCATION OF THE IMAGE ON THE PRINTING FACE OF THE SAIDPRINTING PLATE BEARS IN RELATION TO THE SIDE MARGINAL EDGES OF THEPRINTING PLATE.